# A373300 (b-file synthesized from sequence entry) 1 1 2 5 3 15 4 45 5 105 6 264 7 555 8 1221 9 2445 10 4935 11 9324 12 17941 13 32522 14 59400 15 104808 16 184569 17 315711 18 540540 19 902335 20 1504800 21 2462724 22 4014513 23 6444425 24 10316250 25 16283707 26 25610886 27 39841865 28 61720659 29 94687230 30 144731706 31 219282679 32 330996105 33 495901413 34 740046425